Wall grille



F. M. YOUNG WALL GRILLE Filed April 2, 1934 Fig.1.

Oct. 19, 1937.

Oct. 19, 1937. YOUNG 2,096,271

WALL GRILLE Filed April 2, 1934 2 Sheets-Sheet 2 F139. FLqJo.

Emmi-w? wr-mma g Patented Oct. 19, 1 937 PATENT OFFICE WALL GRILLE Fred M. Young, Racine, Wis., assignor to Young Radiator Company, Racine, Wis.

Application April 2, 1934, Serial No. 718,568 2 Claims. (01. 98-114) It is the intention, that the present patent shall cover by suitable claims, features of patentable novelty other than claimed in my pending application dated March 12, 1934, Serial No. 715,190.

The objects of my invention are: first, to deliver the air from the grille, fanlike; second, to evenly spread the passage of air throughout the grille assembly; third, to reduce surface friction to a minimum; fourth, to prevent whistling or air interference noises; fifth, to provide a unit grille core assembly which may be easily fitted into' any desired type of frame or housing; sixth, to provide a grille which is strong, light, inexpensive and pleasing in appearance; seventh, to provide a grille core assembly without the use of bolts or complicated spacing members; eighth, to provide a grille core which, when assembled in a holding jig, a convenient means is provided for bonding the assembly together; ninth, to provide a grille which may be assembled into any length and adapted to any degree of air spread without changing the parts from which the grill is made; tenth, to provide novel indentations across the fin surface properly spaced to thereby give the assembly face a pleasing appearance, without in any way restricting the air passage; eleventh, to provide fin grooves at a transverse angle to thereby divert the air current upwardly or downwardly.

A further object of my invention is to provide a suitable housing for a grille of the class, whereby the assembly is made without the use of bolts or screws, is simple, light and pleasing in appearance, having when desired, detachable means for holding the grille assembly into the frame assembly.

I accomplish these objects by means of novel fin strips and novel spacer bars having means whereby the fins may be positioned at any desired transverse angle to the bars and variously spaced apart thereon, and further by making the grille and holding frame in separate and independent units and providing means whereby the grille may be removably or permanently placed in the rearwardly extending opening of the housing.

To these and other useful ends my invention consists of matter hereinafter set forth and claimed and shown in the accompanying drawings in which: I

Figure 1 is a front elevation of one form of myv grille and holding frame or housing.

Figure 2 is a horizontal section taken on line 2-2, of Figure 1.

Figure 3 is a top view of a grille unit as shown in Figure 2, except that the fin strips are variously spaced and angled,

Figure 4 is an end section taken on line 4-4, of Figure 1.

Figure 5 is a fractional front view of a modified form of grille fin.

Figure 6 is a view similar to Figure 5, except 5 additional alternately positioned indentations in the fins are shown.

Figure 7'is a front view of a fin strip having a full corrugated shape and showing a fraction of the spacer bars.

Figure 8 is a side view of a fin strip as shown in Figures 1, 2, 3, and 4, except that the fin strip is indented as in Figure 5, the indentations, however, being positioned between the spacer bars and at an angle to the direction of air flow.

Figure 9 is a side view of a modified form of fin strip.

Figure 10 is a top view of a spacer bar as used in connection with the fin strip shown in Figure 9.

Figure 11 is an enlarged fractional section as 20 shown in Figure 4, illustrating a modified form of side plate holding means.

Figure 12 is a modification of the end grille holding means as shown in Figure 2.

Figure 13 is a further modification of the end 25 grille holding means.

As thus illustrated in Figures 1, 2, 3 and 4, the grille or core assembly comprises a multiplicity of fin strips l0, and a number of spacer bars I l. The strips l0 are provided with spaced apart slits 30 I2, which are adapted to snugly engage the bars II, the fins being positioned at right angles to the bars, as indicated in Figures 1 and 2, and closely spaced thereon and bonded thereto, an assembling jig being provided wherein the fins project 35 therefrom, at least to the depth of the slits l2. A clamp is provided which hooks over the ends of bars i I, somewhat similar to that shown in Figure 2. This clamp is preferably made of a dissimilar metal from the bonding material and to which the 40 bonding material will not adhere. The projecting portion of the grille is then dipped into molten bonding material. Thus the fins ill will be bonded to the bars II and a compact grille unit provided.

I provide a grille housing comprising the front frame 15, having a suitably sized opening for the grille as indicated in Figure 1. I provide end brackets l6, having feet I! and inwardly project 50 ing lips l8. Thus when the grille is placed into position on the rear of frame IS the brackets iii are made fast to the frame, preferably by spot welding members I! and I5 together. Thus as illustrated the grille will be held into position 55 through the brackets l6 and the lips l8 which rest on the ends of the bars H.

I provide side brackets l9 (see Figure 4) which are similarly shaped to brackets l6 and having, preferably, inwardly projecting lips 20, which engage the fin strips as illustrated. Thus when the end and side members l6 and I9 are made fast to the frame l5, the grille and housing will comprise a compact, light and strong unit suitable for wall installations and the like.

In certain wall installations it is desirable to discharge the air fanlike. I accomplish this in the following manner (see Figure 3). The center fin strip I0 is positioned on bars I l at right angles thereto and each succeeding fin toward the ends is spaced slightly further apart than the preceding fin and each fin is also slightly angled greater than the preceding fin. Thus the fins diverge at an ever increasing angle and are spaced apart at their rear edges at a gradually increasing distance from the center as clearly indicated, however it will be understood that all of the fins l0. may be angled in the same direction, or differently directioned in individual groups.

When air travels through a tube or duct, because of surface friction, it will travel faster at the center than at the outside. With an ordinary grille a much greater volume will be discharged at the center. I provide gradually increased spaces between fins from the center toward the ends to counteract this tendency which is quite pronounced when the end fins are at an angle as shown in Figure 3. My gradually increased spacing and diverging angles tend to discharge the -air fanlike at a uniform speed or volume and further, applicants fins are thin and his spacer bars are narrow and since very few bars are needed there is very little resistance to the air stream. The air is discharged in evenly volumed strata and thus the grille will operate efliciently and noiselessly.

In Figures 9 and 10, I illustrate a slightly different manner of fastening between the fin plates and spacer bars. In these figures the fin is designated by numeral 25, having slots 26, which are somewhat less in depth than slits l2. The bar 21 is provided with narrow slits 28, one for each fin. Thus slots 26 embrace the bars 21 and slits 28 embrace the strips 25, whereby when the assembly is completed the parts are bonded together and will then have the same appearance as the grilles shown in Figures 1, 2 and 4.

The appearance of a large number of spaced apart straight fin edges is not altogether pleasing. For the purpose of improving the appearance of my grille I preferably provide spaced apart indentations across the fin surface. The grooves thus formed are preferably positioned in transverse alignment as indicated in Figures 5 and 6, so as not to disturb the air fiow. In Figure 5, the fin strip is designated by numeral 30 and the groove or indentations by numeral 31. These grooves are pressed into the fin and the projection thus formed on the opposite side of the fin is in alignment with the groove in the adjacent fin. In this design these grooves are also preferably in alignment with the bars H.

In Figure 6, indentations 32 are spaced midway between the bars i l and alternately positioned to the grooves 3|. Thus when my improved grille is viewed from the front and at various angles the grooves or indentations tend tocamoufllage and present a more pleasing appearance.

In Figure 7, I illustrate a fin 35 which is corrugated. Thus it will be seen that variously positioned indentations may be used, and while I 1,

show curved indentations, they may be V shaped or the entire fin zigzagged in various shapes.

I have described and shown how the air current may be discharged fanlike. In Figure 8, I illustrate a fin 40 having indentations 4|, similar to those shown in Figures 5 and 6, except that they are at an angle transversely; thus the fins may be positioned so as to divert the air upward or downward, or any combination of angles may be used for a desired purpose; for example, the indentations 4| may be alternately directed on alternate fins, thus to cause the air to be discharged fanlike vertically.

In Figures 11, 12, and 13,1 illustrate modifications. Figure 11 is very similar to the assemblies shown in Figures 2 and 4, differing only in the side plates. The side bracket 45 extends rearwardly as indicated and a supplemental bracket 46 is provided having inwardly projecting lips 41. Thus the assembly is similar to that shown in Figure 4, except that 45 terminates on a plane with the rear end of IS, thus forming a slightly more desirable means for connection to the air duct tube. In Figure 13, I illustrate an end bracket 48, having a supplementary bracket 49 similar to the side bracket shown in Figure 11.

In all of the figures thus far described I contemplate spot welding the frame to the side and end plates and in Figures 11 and 13, I contemplate spot welding members 46 and 49.to their brackets 45 and 48. Thus the grille is not easily removed. It may be desirable to detachably hold the grille to the housing. This may be accomplished by attaching members 46 and 49 by means of bolts.

Figure 12 illustrates a still further modification wherein the end bracket 50 is preferably spot welded to the frame and side plates 5! are not provided with inwardly projecting lips. An L shaped holding member 52, is adapted to engage the bars H, as indicated, and be held to the end plates 50 by means of bolts 53. Thus there is provided a rearwardly extending enclosure for the grille suitable for convenient connection to the air duct and the grille is removably held against the frame l5 by means of bracket 52.

By referring to Figure 3, it will be observed that the front face formed by the fins will present a slightly convex shape on its outlet side transversely. Thus the grille will be slightly bent at its ends toward the frame when the bracket 52 is made fast to the end plates. It may therefore be stated that the grille will be under spring tension, to thereby hold it from rattling or working loose.

Thus I have provided a simple and light frame and simple and light end and side plates forming a suitable housing for my improved grille core, suitable means for connection to the air duct, and either permanent or detachable means for holding. the grille in the housing.

Having thus shown and described my invention, I claim: I

1. A wall grille of the class described, comprising a number of spacer bars having a multiplicity of closely spaced fin strips mounted transversely thereon forming a grille, a housing comprising a front frame having rearwardly extending side and end members forming an enclosing outer frame for said grille, means whereby the front of said grille is curved rearwardly toward the ends of 2. A grille of the class, comprising a number of bonded thereto to thereby form a unitary grille, spacing bars, a multiplicity of strip fins each said fins having a number of spaced apart grooves having a number of spaced apart slits cut transpressed into their sides for their entire width at versely in their rear edges, said fins assembled an angle to the direction of air flow.

transversely on said bars in spaced apart rela- 5 tion the slits closely embracing said bars and FRED M. YOUNG. 

